Drying plant



P. BARDUCCI. D-RYmG PLANT. PLICATION lFILED AUGA 16, 1919.

6 SHEETS-SHEET 2- y F lnvenfor.

Pilade Barducci.

Patented June 7, 1921.i

P. BARDUCCI.

DRYING PLANT.

APPLICATION FILED AUG. 1s, |919.

1,381,054, 4 Patenteduune L7, 1921. Fig. 13 3' Aforfjey.

P. BARDUCCI.

DRYING PLANTI APPLICATION FILED AUGA 16I9I9.

Patent-sd J Ime Y, 192i.

6 SHEEISIIEET 4.

` FQ. I9

lrII/en for. Plade afduccI;

'Patented June 7, 1921.

6 SHEETS-SHEET 5.

lnven-fbr.

Plcme Emrducc.

P. BARDUCCI. DRYING PLANT.

APPLICATION FILED AUG. 16| 1919.

Patented June 7., 1921.

6 SHEETS-SHEET 6.

Fig y PILADE BARDUCCL 0F NAPLES, ITALY.

Davinci PLANT.

Speccation of Letters Patent. Pgftlented Julie 7, 1921.

V.Application led AAugust 16, 1919. VSerial No. 317,900.

To @ZZ whom 'it may concern:

Be it known that I, PILADE BARDUCGI, a

vsubject of the King 'of Italy, and resident of Naples, Italy, haveinvented certain new and useful Improvements in- Drying Plants, of whichthe' following is a specilication.

This invention relates to Ventilating apparatusfo'r drying rooms and hasfor its object an apparatus particularly .useful in drying rooms havinga great length 'when compared with their width. Said apparatuscomprises', according t0 this invention, means traveling in the room andproducing in succession in the different portions of said room aVertical air current and a plurality of air streams directed along' thepath of said means and longitudinally in the room; these streams causethe air to be moved vertically at a distance from the zone in which saidvertical current is produced and may be inclined or horizontal ones andin this latter case, if required, they may take place near either of thehorizontal walls of the room.

The above mentioned plant produces an alternating ventilation and isparticularly useful when the material to be dried is adapted to be hungin the intermediate portion of the' room, as in the case of longalimentanv pastes or macaroni, wool or cot-pY ton threads, tobaccoleaves or the like. This invention also comprises meansV for producingthe above described operation, these means operating to give rise to theair current and streams referred to and being also adapted to copei'atewith-inlet and eX-.

ing roomand intended to supply air into and remove it from said room forthe purpose of changing the 'circulating air. l

The annexed drawings show diagrammaticallyV the operation of the plantand some constructions of the air moving means acl cording to thisinvention.

n said drawings,

Figures l to 6 show diagramatically the paths of air streams obtained ina drying room according to this invention;

Figs. 7 to 12 show the paths of air streams Ain a construction in whichthe air moving means coperate with air inlet and exhaust ports providedin the room walls;

Fig. 13 is a transverse section of a room on :in enlarged scale showingin detail the Ventilating device haust ports provided in the walls ofthe dry- Fig. 14 is a partial longitudinal section of the room andVentilating device;`

F ig. 15 is a longitudinal section of a modified construction ofVentilating device;

Fig. .lr6 is a diagrani'showing the Yoperation of this Ventilatingdevice; i

Figs. 17,18 and 19 show the path of air streams obtained in theroombymeans of a modified construction of said Ventilating device;

Fig. 2O shows the path of air streams obtained in the room by means ofsaid modied construction of Ventilating device arranged v to operate ina different manner; v'

Fig. 2l shows the path of vair streams' obi I tained by means of.said'modified construction of Ventilating device and cop'eratingA inletand exhaust ports provided in the walls of the room;

Fig. 22 Vis a longitudinal ysection* of said i modified construction ofVentilating device;

dug. 23 is a fragmentary transverse section of a drying room on anenlarged scale showing a construction vof means for reversing theoperation of the Ventilating means at each stroke; l

Fig. 241s a front View showing a detail of said means.; f

Fig. 25 is a transverse'fragmentarysec-f tion on line Vy-y of Figg24,and Fig. 26 is a fragmentary detail section-of adevice for reversing therunning offsaid Ventilating 4 means.

As shown by Figs. lto 6,1the chamber has preferably a great'lengthwith'regard to its width and is adapted to contain the material to bedried which is located inthe zone P of said chamber. A Ventilatingdevice V is arranged to reciprocate throughout said room and along saidmaterial, and this device operates as hereinafter described to produce asuction fromv the topv to thebottoni ofthe room as well as one'or morehorizontal air streams directed lengthwise in the,

room in proximity tothe floorg'said streams have` a given'direction when'the Ventilating device V, during its reciprocation, is in one sectionof the room and thef opposite direc- 'tionvvhen said Ventilating deviceis in the other section of the room, said sections vbeing shown byreferencesX and Z.

Obviously, when said horizontal streams have a length equalto about onehalf of the length of room A, this being obtained by imparting a properspeed to the air current at its issue from the device V, and they arecaused to act in section Z of room `A when the device V travels in theVother andY the material located in section4 X is ventilated from bottomto top, this `being shown by Figs. 4,5 and 6 Vshowing three positionsofsaid device V in section Z of chamber A.

This operation is obtained by reversing the direction of theihorizontalair stream or streams on said device V reaching the middle of room A,`inthe manner hereinafter described.` L i The eiliciency of the aircirculationproduced by the described device may be fur- -ther increasedby a proper` coperation With l the ports" intended to supply the air toand remove it .from said room; for this purpose said ports are `arrangedat the ends of the room and are controlled in sucha Way that thelongitudinal air streams produced in the room by the device V meet the`air streams entering the room through said ports.

'Such a constru'ctionis shown by F igs, 7 to .12 in Which at Athe endsof room A are provided ports M and N With fans F, these ports and fansbeing preferably located near the lioor ofthe vroom. Said fans areoperated by reversible means for the purpose of reversing the directionof air streams produced thereby and of directing them against thelongitudinal airstream issuing from the ventilatingl device V.

`instead of causing "they Ventilating device to travel at each strokethroughout the room and of reversing the direction of the air streamissuing from the Ventilating device and the operation of fans F at eachstroke, said ventilating device may be caused to reciprocate for a giventime in a single section .oil the room, and then it may be caused topass into another section ofsaid room and to reciprocate for a giventime in this section, the direction of said air `stream andthe operationof the fans F being reversed at the moment in which said ventilatingdevice ispassingfrom the first section to the second one of the room A,as hereinafter described.

`In the annexed drawings Figs. 7, 8 and 9` show the path of air streamsin the` room A `when the device V is moving in section X of chamber A,and Figs. 1 0, 1l and 12 scribed plant.

show the path oi the air` streams When the device V is moving in thesection Z of the same room. In the three last figures the operation oftheventilating device V and fans F is reversed with regard to thatassumed for Figs.`7, 8 and 9 and in any case said Ventilating device Vand either of the fans F producel horizontal air streams meeting eachother.

Figs. 13 `and lafshow a device adapted for use in connection withV theabove de- As shown lin `said figures said device comprises a casing 1having bearings 2 yin Which are mounted axles 3 having Wheels l Whichareadapted to run electromotor 6l anda suitable gear 7.

The casingl is provided,ivithrpartitions 1- forming side chambers 19--19leach havving a top enlarged mouth 8. and opposite tothe pinion 14 andextending "from the side of the casing' to cooperate With a device ar-.iranged in tlie'middle portion of one lofthe side walls of roo'm A ashereinafter Vdescribed.- y y i ln the construction shown by Fig. 15,instead oi battles 1.2, themouths 9 1() are controlled by means ofbutterfly or similar valves 21 `vvhich are suitably operated by means oigears,`levers,rarms or the like.

The electric current maybe fed to electromotors 6 and 11 by means oftrolleys or the Wires 19?'arranged longitudinally in the room A. i n y.X y

A construction of thedevice ,for reversing the position o-thebaiiles l2is shown in-detailby Figs. 23, 24 and A25.V

Said device comprises an"arm`27 located in a recess 28 oi' the Wall ofthe room A and pivoted on a pin `2$Vcarried by a plate 30 closing saidrecess. `Said plate 30 is provided With an arch shaped slot 31 having.its center at 29, fthe arm 27 carrying a pin 17 projecting through saidslot 31 and'having a roller 33 for engagement With the arm v16 of thetravelingdevice V. Within the recess 28fare locatedtvvo springs 34; eachhaving oneend secured to arm 27 and the opposite one secured to,theavvall ofl said recess.

vWhen-"the arm 16 ofthe traveling device` V strikes the roller 33 andthe, pinl',l the latter is moved with thel arm 27 to'l a certain extentagainst the action of either oi' said springs 34: and then ,the `arm 16is rocked with pinion 14 so as to operate the on track 5` and are drivenby means of an .105 similar' members 18 sliding in contactivith baffle12; :after this operation the `arm 161eleases the pin 17 and the arm27is restored `by spring 34 to its intermediate position for engagementwith arm 16 on the next stroke Lof thedevice V.

In operation, the Ventilating device V is .driven by electromo'tor 6,gear 7 and wheels '4 to reciprocate through sections Z and X lof 'theyroom A, and the Jfans 2O are operated by their motors 11 to produce asuction from topto bottom and to drive an lair 'stream through eitherthemouths 9 or lthe mouths 10 according to the position of bafvties 12which are reversed rasdesoribed when the vapparatus passes the middle ofp the room' byshat 13,gears 141-15 and arm 16 lcoperating with 'pin 17.

This operation gives rise to a vertical downward air stream R and toeither of horizontal streams 4S-S as indicated by Fig. 16 andhereinbefore described in connection with Figs. 1--6.r

The operation shown by Figs. 7-12 may vbe obtained by contro-lling therunning of fans Fmounted in ports MD-Nso'as to drive into room A any airstream directed against that issuing from mouth .9 `or 10. Thus saidfans F operate to change the air within thel room and they improve the.ventilation; for instance, at the meeting pointot' the opposite airstreams that is, the' stream produced by the device V and the streamproduced by either of fans F, there is pro- `vided a sti-ong air..stream from bottom to top; thereby increasing the quantity of .airmoving near the horizontal wall of the room and coming toward thesuction mouths of the device Vand the opposite ports of room A, the fansF at the other end of the room A operating to exhaust air therefrom. y

Figs. 17 and. 18 show the operation of a modiiied construction ofVentilating device V in which this device drives 'through either of its'front mouths 9-10 anupwardly in- 'clined air stream, the air thuspropelled being drawn through the top mouth 8 'so as to produce avertical downward Yairv current above said devices. Figz 19 shows asimilar operation of said devicefin which air is pro- JKpelled'throughboth front mouths 9 and 10 of the device, both streams thus produced'collecting together and the air being drawn. vertically into the devicethrough lthe ytop mouth 8; Finally in the operation illus-V tratedv byFig. 20 the air is propelled upwardly tirough the top mouth Sand thesaid air is delected'by the top wall of the room so as to be drawnAthroughthe front mouths 9&1() of the device.

struction o'f'a device adapted to give rise to i the operationillustra-ted by Figs. 17 -18-19 aud 20, this device being similar to.that shown in Figs. v13---111and 15 and being provided with means .forgiving `rise to inclined fair streams and for adjust-ing their inclina-As shown ycasing 'is providedfat its ktop with one or in'said figure,thefdevice coin- `prises :a .casing'l having bearing 2 in ywhich faremounted axles 3' having wheels A. Said U0 more 4mouths 8, having.spreading rods 20 for spreading the air v{iowing kthrough them, 'aswelllas :with front mo-uths9and 10. .In lsaid casing are mounted a propeller2O and vafbaiii'e ,12"for controlling the flow oi air .through saidcasing 1 las above described.v

In months 9V and .10 are located horizontal each olf-:them is pivoted armovable extension stationary plates 21a and at the .outer edge of l( orplate-22 tixed to a toothed-quadrant 23.;

Ithe severa-l quadrants lgear with screws 24:

which are secured to` aspindle 23 Vprovided withv a controlling handwheel '126. Y

fBy operating lthe hand f heel26 and 'spindle k25 the plates 22areswuli'g around their Vpivots and' therefore they maybe carriedYeither in 1alinement with the associated sta- --tionary pilates '21a'or. at any required. vangle with 'reg-ard to the same and thereforethedirection yor Ainclination -o1: airl streams flow- "ing between :saidyplates may: bel :adjusted f-a't willuaccordingto requirements. f p

TheY .bailie 12 'may be operated by the gearl describ'edin connectionwith Figs. 23e-24+- 12'5 to cause the air to flowthrough either oflmouths 91er 10 for reversing the said -air stream at thelrequired timewith regard to Athe reciprocation of the ldevice in the room valnd'thustof obtain the operation shown yby Figs. 17 and 18'; further, saidbaffle may be heldin its'intermediate position, theair Vbeing thenpropelled throughboth mouths 9 and10 as shown byV Fig. 19. Finallyvsaidbaiie may be held in its intermediate position and the operation ofpropeller 11 may be reversed to. obtain 'the' operation .shown by Fig.20.

A-s shown by Fig. 21, the:traveling` eentilating device V imaly coperatewith inlet.

and exhaust ports M, N and M', Nv feeding the air intok the Aroom and.exhausting it therefrom, and therefore the saine operation asVdescribed in connection with Figs.

7?-12 may be obtained.. .f

Further; the Ventilating Vdeviceneed not be arranged toY travel. along.a ytrack located Fonthe groundxof the rooin,`but other f arrangementsmay be provided. e AFig; '26, :whichis afragmentary enlargedsec'tion'vof thebottoni portion'of the ventilating device V, shows aconstruction 'of an arrangement for :driving said .device .and reversingthe direction of Vits run in the room. Fig.'22 shows by way of'example`a coni ASaid arrangement comprisesvan electro- 'motor Gfmounted on theloor 320i the def ,vicefV .and :whose shaft has a pinion "35meshing/with a pinion36 driving a speed rreducing ,gea-r Vof any -kindshown ias a whole operates a pinion rotatably mounted `on a stationarypart 39 and comprising a bevel toothed rim 40 meshing with pinion 38, as

Well as a bevel toothedxrim 41 meshing With fpinions 42 and43 which areloosely mounted fon the shaft 3 `olfthevvheels ,of the device.

Said pinions 42 and 43 are thusdriven in oppositedirections and they areprovided With means ifor engagement With a clutch; sleeve -44 adapted torotate with the shaft 3 but to Vbe shifted along said shaft by` adepending arm 45 pivoted on a stationary portion of the `fraineof` thedevice and having afroller 46.

" At suitable points on the floor of rthe room arelocated svvitches-47each comprising a `slope surface 48 (intended to;be engaged by `providedwith a trip deviceholding it in engagement with either ofsaid pinions'until it is shifted `by one of said switches.` f*

. A number of adjustable switches similar y to 47' may be `arrangedalong the path` ofthe roller 46iin order to `reverse the runningbf theventilatlng'device at any desired point :of 4its travel for the-purposeof limiting the travel of the ventilating device .to any portion of thelength of the room.n i

Bythe described constructions of the apparatus there may; be obtained inthe drying room, vertical airicurrents and air streams `directed alongthepath ofthe device and Y longitudinally of the room, these streamsbeing horizontal `or inclined and issuing 'from or entering said device"through a single lone or both thefront mouths "of the same;`

Obviously,` the `Ventilating ydevice lmaylbe provided with a singlesuctionl mouth or Witha plurality of them, according tosize of room A`and circumstances; also thelnumber of inlet'and exhaust ports M andvary according to circumstances.I

In connection with subject matter disclosed but not claimed hereinattention is called to my copending applications Serial Nos. 352,263,filed January 19, 1920,` 352,266, led J anua'r'y19, 1920and352,267, ledJan- Auary 19, 1920, andmyl Patent No. 1,344,163 `granted June22,V1920,' 1 "ww 5.55 "l Vto secure What I cl""m asmy invention and desireby United States Letters 'Patent 1S 2*,- i v ,i i

l". :In :a plantfor dryingmaterials, agroom' i intended to contain thematerial to bedried; and means reciprocating 1n said room and adapted toVproduce'vertical `ai-r currents and Aair streams directed alongthepath'or said means, said streams `giving rise to' vertical `currentsWhich ftravel along said room `.in

.N 'may ,1,3sigo54 21 Ina-plant for drying materials, a room intended tocontain the materialto be dried; means reciprocating in said room, andadapted to produce vertical air `currents and air streams directedralongthe pathhof said .means ports in the transverse `Walls of -said room;and means for producing airfstreams through said ports, said streamscoperating :to give rise to vertical air Vcurrent-s `which travel,along. saidfrooln in accordance With -the motion of said reciprocatingmeans.

3. `In aiplant for drying materials, a .room intended to "contain thematerial to be dried; `and means reciprocating in said room and adaptedktoproduce vertical air-currents and inclined air streams directed alongthe path of said means, said streams giving rise to `vertical currentswhich travel along said rroom in accordance Withthe motion of saidmeans. i .l y

\ Y1 `4. In a plant :fordrying'materialaa room intended to contain, thematerial to be dried; means reciprocating in said-roomand adapted to.`produce vertical' air currents and inclinedair streams directed alongthe path ofsaid means; ports in the transverse Walls of said room; Vandmeans for'producing air streams through -said` ports, said vstreamscooperating togivef risejito verticalfairfcurfrents Which travel'` alongsaid room Yin acycordance With'the motion ofsaidreciprocatingmeans.

5. Ina plant for'drying materials, `a room intended 'to contain thematerial to be dried; and means reciprocating in said vroom and adaptedto produce a vertical downward suctionand air streams directed along thepath of said means, said suction and streams co- -operatingto give risetovertical air currents which travel along said: room in accordance-vvith the'motionof said means.

intended to contain thefmaterial to be dried; means reciprocating in Ysaid room 'z and,

tion and streams coperating to give rise tf vertical air currents Whichtravel along said roonr in accordance withthe motion of saidreciprocating means.

7.V In a plant for drying materials, airooin intended to contain thematerial to be dried;l

and means reciprocating in saidlroom and adapted to produce avverticalvdovvnward.

suction' i and inclined air streams directed along the path of saidmeans, said suction and streams coperating to give rise 'to ver-l ticalair currents Which travel along said room in accordance WithV the motionof said means. e w

8. `Ina' plant for dryinginaterials, a'room 6.. In a planti'or dryingmaterials, a room 'adapted to produce a 4vertical downward T110accordance With the motion of said means.; intended to contain thematerial to bedried;

nssigosfif means reciprocating lin said room` and adapted to producev avertical dwvnward suction and inclined air streamsdi-rected along thepath of said means; ports in the end walls of'sa'id' room; yand means toproduce air streams throughv said ports, said suction and streams'cooperating to give rise to vertical v air currents which travel alongsaid room in accordance with the motion ofsaid reoip rocating means.` f

9. In a plant for dryingl materials, a room intendedto contain thematerial to be dried; means reciprocating in said room and adapted toproduce a vertical air Acurrent' and air streams directed along the pathof said means; Vand means `for reversing the direction of said air'streams to drive them inlone direction when 'said reciprocating meanstravel in one section .of said room Vand in the opposite one whensaidreciprocatingmeans. travel in the other section ofv said. room, saidcurrent and streamscoperating to give rise .to vertical air currentswhich travel along said room in accordanceiwith the motion of saidreciprocatingy means i f VV10. In a plant for drying -materials, af roomintendedto contain'the material to be dried; means reciprocatingin-saidroom and adapted tofproduce a vertical air'current andlongitudinal air streams directed. along the. path of said means; meansfor reversing the direction of lsaid longitudinal kairstreams tojdrivethem in vone direction when said re-` ciprocating means travel in onesection of said room and in the opposite one when said reciprocatingmeans travel in the kother. section of said room; ports inthe end-'wallsof said room; means for roducing air streams through said ports w ich-are operated to drive air streams againstsaid longitudinal air streams;and means for reversing the operation of said driving means when thedirection of said longitudinal air streams is reversed, said currentsand streams coper-Y ating to give rise to vertical air currents whichtravel along said room in accordance with the motion of saidreciprocating means.

11. In a plant for drying materials, a room intended tocontain thematerial to be dried; means reciprocating in said room and adapted toproduce an upward air current and air streams directed along the path ofsaid means, said current and streams cooperating to give rise tovertical air currents which travel along said room in accordance withthe motion of said means.

12. In a. plant for drying materials, .a room intended to contain thematerial to be dried; means reciprocating in said room and adapted toproduce an upward air current and air streams directed along the path ofsaid means; ports in the end walls of said room; and means for producingair streams through said ports, said current and streams coperating togive rise to vertical air currents which travel along .said room inaccordance with the motion of said reciprocati ing means. 1

13. In a plant for drying materials, a

roomintended' to :contain the material to be mouths; meansforcontrolli-ng the air How thjifoughl said mouths; andv Vmeans atv saidrontmouths for imparting the required: direction to the airstreamsliowing therethrough; "1' 1 15.v In a. Lplant` forA drying materials',-ya rooml yintended to.: contain v:the material to he fdried; acasingadapted A.to reciprocate y in said room Land having v.to'p--Iandv frontmouths; meansfor operating. said casing; meansw for propelling airthrough said top andfz fronty mouths;'means-ror controlling thefairi'lowl through .saidmouths.; and adjustable` means lat .said frontmouths for modifying the direction'of .theV air streams lowinfgthroughthem. .Y V176.1In a plant 'for drying materials, a room intended tocontainthe material to he dried; a casingadapted to: reciprocate in saidroom and-having top and front mouths; means for operating saidcasing;means for propelling air through said top` and Afront mouths;-means '-ior y controllingthe air flow through said mouths; horizontalstationary` plates intersecting said front mouths; movable-plates eachpivoted adjacent the edge 'of one of said stationary plates; toothed.

quadrants fixed to Asaid movable plates; screws meshing with saidquadrants; spindles Afixed to said screws; and means for opj eratingsaid spindles for imparting the required direction to the air streamsflowing through said mouths.

17. In a plant for drying materials,H a room intended to contain thematerial to he dried; a casing adapted to reciprocate in` said room andhaving top and front/mouths; means for operating said casing; means insaid casing for producingV air streams through said top. and frontmouths; means in said casing for'shutting either of said front mouths;means controlling said shutmiddle of the room cooperating with saidcontrolling means to shutl either of said Vmouths and cause the airflowing through them to he driven into one section of the' propellingair .through said top. Vand frontA room when the casing travels in theother section, said air streamsgiving rise to. verticall air currentswhich travel along `said room in accordance with the motion of saidcasing.` y y 18. In a plant for `drying materials, a room intended tocontain the material to be dried; a `casing adapted to reciprocate in.said room and having top and front mouths;

means for operating said casing; means in said casing for producing air`streams through said topand front mouths;means in said casing forshutting either of said front mouths; means for controlling saidshutting means; means ,atV substantially the 'middle of the `roomcoperating With said controlling means to shut eithernof said `frontmouths and cause the air flowing room intended to containthe materia-lto be dried; `a casing adapted to reciprocate in said room and havingtop and front mouths; means for operating saidcasing; means in saidcasing for producing air streams through said top and front mouths;means at said `front mouthsl forl imparting the required direction tothe air streams flowing i through `said mouths; means in said casing forshutting either ofgsald front mouths;

means controlling said shuttingmeans; and

means at `substantially the `middle of the room p coperating Avvith-`saidvlfcontrolling means to shut either of said mouths and cause theair flowing through them tobe driven into one section ofthe room Whenthe casing travels in theother section, said air streams giving risetogvertioal air currents Which-travel `along said room in accordance,with the motion of said casing.

20. In a plant for drying materials, a room intended to contain the-materialto be dried; a casing adapted yto reciprocate in said room andhaving top and front mouths; means for Aoperating said casing; means insaid casing for producing air streams throughs'aid top and front mouths;means at said front mouths for imparting the required direction to theair, streams flowing through them-fmeans inlsaid r casing Vforshuttingfeither ofsaidfront mouths; means n controlling said shuttingmeans; means at substantiallythe middle Jofutheroom cooperating `with`saidmcontrollingl means to shut either of `said frontmouths andfcausethel air flowing through them to be driven into one section of thevroomWhen the casing travels in thevother: section; ports in theendvvalls ofsaid room; and `means for producing'airf streams through said ports,said `means being operated to drive air streams into saidroom againstthe streams produced by said casing and coperating means, saidstreamscoperating to give rise to vertical air currents Which travel along saidrooms in accordance with the motion of saidfcasino. Signedattllaples,Italy, this 18 day of July A; D. 1919. 1 f PILADE BAR-DUCCL

